Many see biometrics-based systems for security screening and other airport processes as a way to build travel infrastructure for the expected volume recovery. That should mean shorter lines and more productive time during trips. This article by Elaine Glusac runs down the latest developments.

If it’s been a year or more since you traveled, particularly internationally, you may notice something different at airports in the United States: More steps — from checking a bag to clearing customs — are being automated using biometrics.

Biometrics are unique individual traits, such as fingerprints, that can . . .

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